Trailer jack



FIG. 1 is a perspective view of a trailer jack showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a cross-sectional view thereof taken along line 6 of FIG. 2; and,

FIG. 7 is a cross-sectional view thereof taken along line 7 of FIG. 2.

The broken lines in the figures are included for the purpose of illustrating portions of a trailer jack and form no part of the claimed design. 

CLAIM The ornamental design for a trailer jack, as shown and described. 